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P. PRYIBIL.

SAW SETTING MACHINE. No. 534,406,. v Patented Peb...I9,l895.

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(No Model.)

' P. PRYIBIL. 4 SAW SETTING MACHINE.

No. 534,406. Patented Feb. 19, 1895.

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lhve ar- Is PETERS co vNoTo-umd, WASHING V STATES PAUL PRYIBIL, OF NEW YORK, N. Y.

SAW-SETTING MACHINE.

SIEGIFICATION formingpart of Letters Patent No. 534,406, dated February 19, 1 895. Application filed October 22, 1894- Serial' No. 526,583. (No model.)

To all whom it may concern.-

Be it known that I, PAUL PRYIBIL, of the city and county of New York, in the State of New York, have invented a new and useful Improvement in Saw Setting Machines, of which the following is a specification.

I will first describe my invention with reference to the accompanying drawings and afterward point out its novelty in the claims.

Figure 1 represents a side view of a machine embodying my invention; Fig.2, a plan of the same, and Fig. 3 a front view of the same.

Similar letters and numerals of reference designate corresponding parts in all the fig ures.

A designates a bed plate on which are erected two standardsa and two standards I), the said standards a supporting the pivot c which constitutes the fulcrum of the lever O which is bifurcated over said fulcrum as shown at d* (1* in Figs. 1 and 2. The two opposite arms d* of the said lever formed by its bifurcation are constructed with sockets which hold the setting dies (1 d. The said standards 1) contain also the bearings for the rotary driving shaft B from which the said lever O and other parts of the machine derive their necessary movements.

D is a rest upon which the back of the saw blade to be set is supported between the setting dies d d. This rest forms part of a frame D which is pivoted at e in lugs e on the standards b. In order to provide for the adjustment of Wider and narrower saws to the setting dies the said frame D has screwed through it an adjusting screw E which rests upon the bed plate A. The standards a are prolonged upward above the pivot c and rest D to form the stationary jawfof a vise ff, the movable jaw f of which is pivotally connected to the said standards. This connection is represented as made by the same pivot c which constitutes the fulcrum of the setting dies. The rest D is interrupted at 5, 5, to make room for the vise ff and is prolonged in both directions beyond the vise for a sufficient length to give proper support to the saw.

The driving shaft B is arranged parallel with the rest D and with the direction in which the saw S is to run thereon. The said shaft is furnished with a cam arm which carries an antifriction roller 0 operating within a yoke O on the lever O for actuating the setting dies. Under the said lever 0 there is attached to the under sideof the bed plate A,

a spring 0 for the purpose of bringing the lever 0 tea central position in which the two setting dies stand at some distance from the sides of a saw S in the vise ff as shown in Fig. 1, the said spring acting through a rod 0 which passes through an opening in the bed-plate A. The said shaft B is also furnished with a cam F for operating on the movable jaw f of the vise, the said movable jaw being furnished with an arm g g which carries an antifriction roller 9 bearing on the said cam. In order to provide for the adjustment of the opening movement of the vise 7c jaw f to a greater or less extent, the arm g is made of two members pivoted together at g and adjustable one to the other by means of a screw 9 Between the arm g and the head of the screw g, is applied an elastic cush- 7 ion or spring g for the purpose of enabling the vise to close with a yielding pressure.

G is a rock-shaft for feeding the'saw. This rock-shaft is arranged at right angles to the driving shaft B in bearings h on the bedplate and it is furnished with two arms h if, the said arm h carrying the pawl t which engages withthe teeth of the saw for the purpose of feeding it to the said dies and the said arm 71 being furnished with a lOllGI'j 8 which is acted upon by two cams k for the purpose of producing the necessary oscillation of the shaft for the feeding movement. These cams kare represented as formed upon the driving pulleyH of the shaft B. A third arm 72. of the said rock-shaft which projects through the bed-plate, has applied to it a spring Z for drawing back the pawl t. The said rock-shaft is also furnished with a fourth arm 77. in which is an adjustable stop screw 9 5 m which regulates the backward movement of the pawl and consequently the length of the feed of the saw by stopping against a lug m provided on the side of the bed-plate.

I is a plate for holding down the saw on the loo rest D. This plate is arranged in front of the setting dies and over the vise, as shown in Fig.

2. The saidplate is pivoted at n to the upper end of aswinging arm J which is pivoted at its lower end at 0 to lugs on the bed-plate. The said plate has in it a slot 0 to receive a screw 13 which is pivoted at p to the movable jaw f of the vise. This screw is fitted with a winged nut 19 under which there is placed on the screwa coil spring 19 hen the machine is in operation the plate I is brought over the saw and secured by having the screw 1) drawn into the slot 0' and having the nut 132 screwed down as shown in Fig. 2, but for the purpose of permitting the introduction of the saw into the machine and for getting access to the vise when necessary, the screw is drawn forward out of the slot 0 and the plate I is raised and thrown back as shown in Fig. 1. Tbs spring 19 interposed between the nut 19 and the plate I, produces a yielding pressure upon the plate which prevents it from injuring the teeth of the saw. The spring 1J also serves another purpose, viz: that of looking the plate Iin its operative position ,pver the saw, the slotted portion of the plate having a countersinkp into which the said spring engages in such manner as to prevent the plate from being drawn back until the nut is sufficiently slackened to permit the spring to be raised out of the slot.

This machine may be either driven by hand or by power. For driving by power it is represented as furnished with fast and loose pulleys H H on one end of the shaft, and for driving by hand the shaft is represented as squared at the other end for receiving a hand crank.

The setting dies which are exactly opposite each other are so fitted to their sockets in the opposite arms 01* d of the lever C as to be adjustable by means of screws '2' r so that their points are at a proper distance apart, and the adjustment is secured by binding screws 3.

The yoke C is so constructed with internal projections t t at the top and bottom that the cam roller 0 operating upon the said projections, produces the movements of lever and setting dies in opposite directions during the fractional portions of a revolution of the shaft 13, leaving the lever at intervals between these movements free to remain in its central position in which it is at rest upon the spring 0 and pin 0 When the lever is thus at rest by reason of the cam being inoperative upon it, the setting dies are both at a distance from the saw, and it is while the leveris in this central position that the vise opens and the feed pawl i operates. By the upward movement of the lever the operation of the setting die (1 is produced and by the downward movement of the said yoke the operation of the setting die cl is produced. The return of the lever to the central position after the downward movement of the yoke and the operation of the die (1, is produced by the spring p and the return to the said position after the upward movement of the yoke is produced by the weight of the end of the lever itself.

It will be understood that as there are two feed cams 7t and the cam roller 0 has a double action within the yoke 0, one tooth is set in one direction and the next tooth is set in the opposite direction during every revolution of the shaft B.

"What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination with a lever having a cam yoke and having two arms carrying respectively two setting dies, a rotary shaft furnished with a cam which is double-acting within said yoke, a device for feeding the saw, and a spring for supporting said lever and dies in a central position in which the said cam is inoperative within the yoke during the feeding of the saw, substantially as herein set forth.

2. The combination with the saw rest and the vise, of the holding down plate I, the swinging arm J to which said plate is pivoted, and the pivoted screw 13 with its nut 19 and spring 19 the said plate I having a slot for the reception of the screw 19 and a countersink p for the reception of said spring, all substantially as herein described.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

PAUL PRYIBIL. IVitnes'ses:

FREDK. HAYNES, L. M. EGBERT. 

